Home / 13,799.77-20,696.72-3,936.40

Finding the Fourth Proportional to 13,799.77, 20,696.72 and 3,936.40

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Solution

The fourth proportional to 13,799.77, 20,696.72 and 3,936.40 is: 5,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.77 : 20,696.72 = 3,936.40 : x
  2. Step 2: Convert to fraction form
    13,799.77/20,696.72 = 3,936.40/x
  3. Step 3: Cross multiply
    13,799.77x = 20,696.72 × 3,936.40
  4. Step 4: Simplify right side
    13,799.77x = 81,470,497.18
  5. Step 5: Solve for x
    x = 81,470,497.18/13,799.77
  6. Step 6: Final answer
    x = 5,903.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.